Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Characterization and photoelectrochemical properties of nanostructured thin film composed of carbon nanohorns covalently functionalized with porphyrins
Δημιουργός/Συγγραφέας:	Pagona, Georgia Sandanayaka, Atula S. D. Hasobe, Taku Charalambidis, Georgios Coutsolelos, Athanassios G. Yudasaka, Masako Iijima, Sumio [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Εκδότης:	American Chemical Society
Τόπος έκδοσης:	WASHINGTON
Ημερομηνία:	2008-10-09
Γλώσσα:	Αγγλικά
ISSN:	1932-7447
DOI:	10.1021/jp805352y
Περίληψη:	Carbon nanohoms (CNHs) covalently functionalized at the conical tips with porphyrin (H2P) moieties were used to construct photoelectrochemical solar cells. Electrophoretic deposition was applied to fabricate films of the modified CNHs onto optically transparent electrodes (OTE) while nanostructured SnO2 films were cast onto the OTE (OTE/SnO2). The CNH-H2P film on the nanostructured SnO2 electrode exhibited an incident photon to current conversion efficiency (IPCE) of 5.8% at an applied bias of +0.2 V vs SCE in a standard three-compartment electrochemical cell. The measured IPCE was found greater than the one observed for the sum of the single components, namely CNHs and H2P films onto the SnO2 electrode. Fluorescence lifetime measurements revealed that photoinduced electron transfer from the singlet excited state of the porphyrin to the nanohoms takes place, while direct electron injection from the reduced nanohorns to the conduction band of the SnO2 electrode occurs. These processes are responsible for the photocurrent generation.
Τίτλος πηγής δημοσίευσης:	Journal of Physical Chemistry C
Τόμος/Κεφάλαιο:	112
Τεύχος:	40
Σελίδες:	15735-15741
Θεματική Κατηγορία:	[EL] Χημεία (Γενικά)[EN] Chemistry (General) [EL] Επιστήμη (Γενικά)[EN] Science (General) [EL] Τεχνολογία (Γενικά)[EN] Technology (General)
Λέξεις-Κλειδιά:	Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© AMER CHEMICAL SOC
Ηλεκτρονική διεύθυνση περιοδικού (link) :	http://pubs.acs.org/journals/jpccck/
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο